mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-21 04:31:04 +08:00
e5f88e0ca0
(POP_ERRNO_LOCATION_RETURN): Fold insns. * sysdeps/i386/bits/setjmp.h (JB_SIZE): New constant. (PUSH_SIGNAL_MASK): New macro. * sysdeps/i386/__longjmp.S (__longjmp): Wrap symbol in BP_SYM (). LEAVE is unnecessary. Check bounds of jmp_buf. * sysdeps/i386/elf/setjmp.S: Call PUSH_SIGNAL_MASK. Wrap symbols in BP_SYM (). Check bounds of jmp_buf. Don't call LEAVE until immediately before tail-call. * sysdeps/i386/setjmp.S: Likewise. * sysdeps/i386/bsd-_setjmp.S: Likewise. * sysdeps/i386/bsd-setjmp.S: Likewise. 2000-06-29 Greg McGary <greg@mcgary.org> * sysdeps/i386/bp-asm.h (PCOFF): New constant. (POP_ERRNO_LOCATION_RETURN): Fold insns. * sysdeps/i386/bits/setjmp.h (JB_SIZE): New constant. (PUSH_SIGNAL_MASK): New macro. * sysdeps/i386/__longjmp.S (__longjmp): Wrap symbol in BP_SYM (). LEAVE is unnecessary. Check bounds of jmp_buf. * sysdeps/i386/elf/setjmp.S: Call PUSH_SIGNAL_MASK. Wrap symbols in BP_SYM (). Check bounds of jmp_buf. Don't call LEAVE until immediately before tail-call. * sysdeps/i386/setjmp.S: Likewise. * sysdeps/i386/bsd-_setjmp.S: Likewise. * sysdeps/i386/bsd-setjmp.S: Likewise.
70 lines
2.3 KiB
ArmAsm
70 lines
2.3 KiB
ArmAsm
/* setjmp for i386.
|
|
Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <sysdep.h>
|
|
#define _ASM
|
|
#define _SETJMP_H
|
|
#include <bits/setjmp.h>
|
|
#include <asm-syntax.h>
|
|
#include "bp-sym.h"
|
|
#include "bp-asm.h"
|
|
|
|
/* Binary compatibility entry point. */
|
|
ENTRY (BP_SYM (__setjmp))
|
|
PUSH_SIGNAL_MASK (0)
|
|
/* FALL THROUGH */
|
|
|
|
#define PARMS LINKAGE /* no space for saved regs */
|
|
#define JMPBUF PARMS
|
|
#define SIGMSK JMPBUF+PTR_SIZE
|
|
|
|
ENTRY (BP_SYM (__sigsetjmp))
|
|
ENTER
|
|
|
|
movl JMPBUF(%esp), %eax
|
|
CHECK_BOUNDS_BOTH_WIDE (%eax, JMPBUF(%esp), $JB_SIZE)
|
|
|
|
/* Save registers. */
|
|
movl %ebx, (JB_BX*4)(%eax)
|
|
movl %esi, (JB_SI*4)(%eax)
|
|
movl %edi, (JB_DI*4)(%eax)
|
|
movl %ebp, (JB_BP*4)(%eax)
|
|
leal JMPBUF(%esp), %ecx /* Save SP as it will be after we return. */
|
|
movl %ecx, (JB_SP*4)(%eax)
|
|
movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */
|
|
movl %ecx, (JB_PC*4)(%eax)
|
|
|
|
LEAVE /* pop frame pointer to prepare for tail-call. */
|
|
/* Make a tail call to __sigjmp_save; it takes the same args. */
|
|
#ifdef PIC
|
|
/* We cannot use the PLT, because it requires that %ebx be set, but
|
|
we can't save and restore our caller's value. Instead, we do an
|
|
indirect jump through the GOT, using for the temporary register
|
|
%ecx, which is call-clobbered. */
|
|
call L(here)
|
|
L(here):
|
|
popl %ecx
|
|
addl $_GLOBAL_OFFSET_TABLE_+[.-L(here)], %ecx
|
|
movl C_SYMBOL_NAME (BP_SYM (__sigjmp_save)@GOT)(%ecx), %ecx
|
|
jmp *%ecx
|
|
#else
|
|
jmp BP_SYM (__sigjmp_save)
|
|
#endif
|
|
END (BP_SYM (__sigsetjmp))
|